PCGASMGetSubmatrices#

Gets the local submatrices (for this MPI rank only) for the PCGASM additive Schwarz preconditioner.

Synopsis#

#include "petscpc.h" 
PetscErrorCode PCGASMGetSubmatrices(PC pc, PetscInt *n, Mat *mat[])

Not Collective

Input Parameter#

pc - the preconditioner context

Output Parameters#

n - the number of matrices for this MPI rank (default value = 1)
mat - the matrices

Note#

Matrices returned by this routine have the same communicators as the index sets (IS) used to define subdomains in PCGASMSetSubdomains()

See Also#

PCGASM, PCGASMSetOverlap(), PCGASMGetSubKSP(), PCGASMCreateSubdomains2D(), PCGASMSetSubdomains(), PCGASMGetSubdomains()

Level#

advanced

Location#

src/ksp/pc/impls/gasm/gasm.c

Index of all PC routines
Table of Contents for all manual pages
Index of all manual pages